Confirmation of direct photogeneration of intrinsic delocalized free carriers in small-molecule organic semiconductors has been a long-sought but unsolved issue, which is of fundamental significance to its application in photo-electric devices. Although the excitonic description of photoexcitation in these materials has been widely accepted, this concept is challenged by recently reported pheno...

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We study Andreev states near atomic scale modulations in the pairing potential in both s- and d-wave superconductors with short coherence lengths. For a moderate reduction of the local gap, the states exist only close to the gap edge. If one allows for local sign changes of the order parameter, however, resonances can occur at energies close to the Fermi level. The local density of states (LDOS...

We have successfully developed a ratiometric detection system for protein of interest using the complementary recognition pair of the tetra-aspartate peptide tag and the SNARF-appended Zn(ii)-DpaTyr probe.

Three pulse photon echo peak shift spectroscopy and transient grating measurements on Zn-substituted cytochrome c, Zn-tetraphenylporphyrin, and Zn-protoporphyrin IX are reported. The effects of protein conformation, axial ligation, and solvent are investigated. Numerical simulations of the peak shift and transient grating experiments are presented. The simulations employed recently derived opti...

Eight commercially available organic Zn products and reagent-grade ZnSO4 x 7H2O (Zn Sulf) were evaluated by polarographic analysis, and solubility in .1 M K2HPO4-KH2PO4 buffer (pH 5), .2 M HCl-KCl buffer (pH 2), and deionized water. Fractions from these solubility tests were evaluated by gel filtration chromatography for structural integrity. Degree of chelation was generally positively related...

RESEARCH ARTICLE Relationships of Zn Between Centella Asiatica and Geochemical Fractions of the Habitat Topsoils: Implications of Biomonitoring of Zn Chee K. Yap, Hishamuddin Omar, Rosimah Nulit, Ghim H. Ong, Alireza R. Bakhtiari, Ali Karami and Salman A. Al-Shami Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Inti International Univ...

We propose an aqueous rechargeable Zn-Cu Daniell-type battery. In this system, Li(+) prefers to conduct currents rather than react with the electrodes, while the Zn-Cu electrode couples engage in their electrochemical reactions free from conducting currents. Here Li(+) performs like a messenger and thus could be called the electrochemical messenger.

We discuss the structure of the effective Lagrangian for the (2,2) ZN orbifolds and the corresponding Calabi-Yau manifolds which are obtained by “blowing-up” the orbifold singularities. The method to “blow-up” such singularities is reviewed.’ Results are exact at the string tree-level. In particular the question of generating an intermediate scale MI in such models is addressed. It is shown tha...